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His method and pacing seems a little rushed in the example video. Though if you have a fairly thorough understanding of chord construction up to an including at least seventh chords and possibly extensions, then understanding and following along might not necessarily be a problem.

My fear would be that he'd teach some ideas, but not properly convey how to use them practically. Off-topic: he kind of comes off as the cliched idea of a used car salesman haha.